Power Sector is the single biggest contributor to greenhouse gas inventory (GHGI), which is primarily responsible for Global Warming. Total contribution to GHGI from each of the electricity generating technology - emissions from the production of raw materials (like steel, aluminum, etc) to the various process stages of generation of electricity, including management of waste and transmission of the power, need to be taken into account to get the Full Energy Chain Greenhouse Gas Emission Factor (FENCH-GHG) in the units of carbon dioxide equivalent per kilowatt hour electric, for the purpose of comparison. The results of one such Japanese study is given below:
More effective (than CO2) GHG methane emitted from the decaying water-submerged vegetation is not taken into account in the above calculations for hydropower sector. Hence, probably the factor is low. As could be seen nuclear power is the environmentally cleaner power option. Then what is stopping?
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